55666667888 has 40 divisors (see below), whose sum is σ = 120155851200. Its totient is φ = 24806363904.

The previous prime is 55666667873. The next prime is 55666667911. The reversal of 55666667888 is 88876666655.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4608248 + ... + 4620311.

It is an arithmetic number, because the mean of its divisors is an integer number (3003896280).

Almost surely, 2^55666667888 is an apocalyptic number.

55666667888 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

55666667888 is an abundant number, since it is smaller than the sum of its proper divisors (64489183312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55666667888 is a wasteful number, since it uses less digits than its factorization.

55666667888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9228609 (or 9228603 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 71.

The spelling of 55666667888 in words is "fifty-five billion, six hundred sixty-six million, six hundred sixty-seven thousand, eight hundred eighty-eight".